Kanwardeep Singh ji
Interesting question. There have been scientific studies of this question. The answer seems to be it depends on the sport and the physical requirements placed on the long versus short skeletal muscles. In the US you see a predominance of African Americans in basketball and certain types of marathons/racing but not all.
There are certain skeletal/muscle types that lead to greater success in one sport versus another. The body-build is what we typically call that. I would be interested to make comparisons between Africans playing basketball versus those playing soccer, however, because different body-types are needed for each sport. And ....this is important...the body types among Africans are not all alike because of the diversity of genetic pools from one area to another. E.G., Ethiopians compared to Bantu compared to peoples from Kenya or Ghana or Sierra Leone. VERY DIFFERENT. Africans are not all of one sort anatomically. The people of Sierra Leone, for example, can be very tall with massive bone structure -- which is not the favored body build for a soccer player. Interesting to check this out.